Part of LGBTQ+ (3)
'part of lgbtq' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for gay that I've seen before include "Brightly coloured" , "Homosexual" , "Merry" , "John --, author of 'The Beggar's Opera'" , "Writer of The Beggar's Opera" .)
(Other definitions for queer that I've seen before include "Rum" , "Peculiar" , "Strange, odd" , "Eccentric" , "Unusual" .)